Is it possible to have a specific image appear on the left hand side alongside each forum when a new post is made, so that the viewer can see instantly when there is a new post by a change in the left hand icon? So for example if a forum says:

Possibly, but not if you mean anything appearing in the right hand box. When my group had the forum before, that is before the previous admin trashed it, the images on the left hand side changed colour to red when there was a new post, so we'd like that feature again if its possible...